Scaling and design of high-energy laser plasma electron acceleration

(整期优先)网络出版时间:2015-01-11
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Recentlytherehasbeengreatprogressinlaser-drivenplasma-basedacceleratorsbyexploitinghigh-powerlasers,whereelectronbeamscanbeacceleratedtomulti-GeVenergyinacentimeter-scaleplasmaduetothelaserwakefieldaccelerationmechanism.While,todate,worldwideresearchonlaserplasmaacceleratorshasbeenfocusedonthecreationofcompactparticleandradiationsourcesforbasicsciences,medicalandindustrialapplications,thereisgreatinterestinapplicationsforhigh-energyphysicsandastrophysics,exploringunprecedentedhigh-energyfrontierphenomena.Inthiscontext,wepresentanoverviewofexperimentalachievementsinlaserplasmaaccelerationfromtheperspectiveoftheproductionofGeV-levelelectronbeams,anddeducethescalingformulascapableofpredictingexperimentalresultsself-consistently,takingintoaccountthepropagationofarelativisticlaserpulsethroughplasmaandtheacceleratingfieldreductionduetobeamloading.Finally,wepresentdesignexamplesfor10-GeV-levellaserplasmaacceleration,whichisexpectedinnear-termexperimentsbymeansofpetawatt-classlasers.